Here is a test of long (one year) oil change. Also a good comparison of Rotella T6 against Delo 400 XSP. Spoiler: The Rotella won. In a previous test, Rotella T6 beat Mobile 1.
"Tolerance becomes a crime when applied to evil" Thomas Mann
“If you can live amid injustice without anger, you are immoral as well as unjust.” -St. Thomas Aquinas
"When any nation mistrusts its citizens with guns, it is sending a clear message. It no longer trusts its citizens because such a government has evil plans." - George Washington -
2007.5 Silverado LTZ
, Crew Cab
SB, Silver Birch
/ Ebony Leather
, , 150k + miles
, , etc. Gearbox Z, Air Lifts
Montana High Country 310RE
My Other other Car: 70 Nova SS 350
, 4 speed, posi, Fathom Blue, frame-off resto, original owner!
'03 Silverado CC gasser 4x4, '99 Sierra Ext. Cab 4x4, '77 Dodge Power Wagon 4x4, '76 Datsun 620.
Read the DISCLAIMER in my garage.